FTPS Options
FTPS is union of regular FTP and the
Secure Sockets Layer and Transport Layer Security protocols. SSL is
a protocol for encrypting and decrypting data across a secure
connection from an FTP CAP operator to an FTP server. For each FTP
CAP operator, there are four FTPS settings that can be chosen. The
one that you select is dependant on your FTP server
configuration.
Implicit (passive)
A secure connection is established
as soon as the FTP operator connects to a FTP server. The FTP
server defines a specific port to be used for secure connections.
You cannot connect to the server that is configured with implicit
SSL using unsecured FTP.
Explicit (active)
A secure communication channel is
established after making the initial connection to the FTP server.
There are two channels that can be secured in the FTP
communication. The Control channel is used to send FTP commands to
the server; all results of the command, except for files, are also
sent along this channel. The Data channel is the communication
channel used to transfer files between the server and the FTP
operators. Each channel can be secured individually or together. A
server that is configured for explicit SSL is also able to connect
using unsecured FTP; however, this ability is dependant on how the
FTP server has been configured.